Aeronautical machine.



A. P. J. DOUTRE.

ABRONAUTIGAL MACHINE. APPLICATION FILED JUNE 19, 1911.

1,084,796. Patented Ja11.20,1914.

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AERONAUTIGAL MAOHINE.

APPLICATION rum) mums). 1911.

Patented Jan. 20, 1914.

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APPLIUATION FILED 111111319, 1911.

1,08%,796` Patented .13.11.20, 1914.

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to slide longitudinally of the rod.

' not interfered With.

arrangement, is that by it the movable 'mass is not adectedby variations in the inclination of c trame of the machine but only by variations in the absolute velocity..

The mass 27 is connected directly with the rod Y29 ol2 the valve 30 oi a compressedair servosmotor comprising a piston 31, rigidly connected at S2 with the frame of the apparatus, and amovable cylinder 33 to 'which is connected the balancer operating; rod 34. An opening 35 in the valve casing is adapted to be connected with a source of compressed air, and tivo passages 36, 37, connect this casing with the interior o cylinder 83, said easing having also tivo openings 38 and 39 communicating with the atmosphere. 1t Will be seen that any variation in the position of the mass or body 27 Will effect a corresliionding` displacement of the valve 3() and consequently admit air to one or the other faces of the piston 31. rhis will 'produce motion of the cylinder 33, the extent of which will be determined by the amount of movement of the valve. The rod 34e transmits movement of the cylinder 33 to the automatic balancer, not shovvn in Fig. l. If desired the cylinder 33 may bestationary and the piston 3l therein movable, or any other form of servo-motor or means oi transmitting movement may be employed.

Fig. illustrates a means for auton'iatically actuating the balancer operating rod 34 under .variations in the absolute velocity of the machine, as referred to in connection with Fig. l, and .also a means for actuating said rod under variation in the relative velocity. Referring,- to this figure, l indicates a movable plate Which is shovvn to be supported by rods Al0 suitably mounted to move freely in guides Iil. Connected with each or the said rods is 'a tube 42 movable in guides 43, and on said tubes are secured rings ele, e5. Springs 46, l? surround said. rods 42, between the rings 44, l5 therein and a movable Weight 27, Which is adapted The Weight 27 is connected by a rod 49 with the stem 29 or" the valve of the auxiliary motor, the tubes ll2 having suitable slots a8 through which the ends of the rod llextend so that movement of the Weights 27 on euch rods is etween the rings la and the frame of the apparatus are arranged springs 50 which act to push the plate l ior- Ward Whenever the action of the air weakens. `With this arrangement it Will be seen that the valve rod 29 ot' the auxiliary motor is controlled both by the action et the plate l,

the position of which will be varied accord' ing to the 'variations in the relative velocity of the machine, 'and by the variation in the position of the adjustable masses 27, movement of which is caused by variation in the absolute velocity of the machine, and that therefore it is possible completely regir motor.

late the longitudinal equilibrium oi? the machinejvith a single mechanism Whether the cause interiore with either the absolute or relative velocity.

Referring to 3, the plate l is supported by rods 40 and tubes 4t2, the latter being adapted to slide in guides 43. As in the form shovvn in 2. tie rods 42 are ii'irovidcd with collars Lllll, 4:5, between which and movable weights 27 are arranged coiled springs flo, 47, and springs 50 shown as arranged within suitable housings 51 abutting against the collars lil are provided for holding,- the plate in its outer position. In this :form of the invention the movable `weights 2 are connected by pins extendingthrough slots in the tubes 4t2 with slide rods 29a that project beyond the ends of said tubes toward the plate 1 and have such projecting ends connected by a suitable cross-head that is attached to the stem oli' the valves 3() of the servo- -The form of this motor, illustrated in Fig. 3, has the valves 30 arranged within the piston 3l', the stem 32 of Which is connected, as at 32, with the automatic balancer, the cylinder 33 of .such motor being' in this instance the stationary member. Compressed air from a suitable source is admitted to a chamber (l and through a duct e to the valve chamber, and, according, to the adjustment of said valves, passes through ducts f, y, to chambers 71 2'., at opposite ends oi4` the piston 31. V

Referring to Fig. 4, there is illustrated a biplane machine having, its center of gravity placed below its center of pressure and provided with 'tivo balancers 7c, Z, at opposite ends, both of which are connected with the automatically acting devices before described. l'n this ligure represents the planes, m the motor for driving the pro-.

peller, fn, the air compressor, ando a reser voir for the compressed air. The connec-V tion shown in this ligure between the balancer actuatingl devices and the movable rod 32 oit' the auxiliary motor comprises a lever frame oi the machine.

1t will be understood that Whenever the f1' pivotally supported ats on a portion of the relative speed ot the aeroplane diminishes,

the position of the plate l varies, and the second adjustment of the rod 32 shifts the balancers, and similarly said balancers will be automatically adjusted by variations in the positions oi the movable masses 27, 27 or l, due to changes in the absolute velocity of the machine.

lt will be 'evident that there can be considerable variation in the construction of some of the parts herein described Without departing from the invention. For example, the movable plate l, which is simply a means sensitive to variations in. the relative velocity oi" the machine, may be replaced by any suit- Vbalancer will` only occur when there is a considerable variation in either relative or absolute velocity, that is to say, when such velocity rises above or falls belowA certain permissible li Inits.

.llaving thus described the Yinvention what is claimed and desired to be secured by `Letters Patent is: Y

l. .ln a tlying machine, the combination with a balancingplane, of a mass adapted to more in the direction of the lfmg'itudinal 'axis ot' the machine when there is any variation in the absolute velocityoi the machine. elastic means opposing.movement of said mass under the action oll gravity, vand moana controlled by said mass and connected with the balancing plane to properly more the latter to restorethc hmgitudinal equilibrium ot' themachine when any variation occurs in the absolute velocity thereof.

2. In a llyingfmachine, the combination with a balancing plane, of a mass adapted to more in the direction et' the long gitudinal-` aXis egt' the niachine when there is any variation of the absolute velocity of the machine, elastic means imposing -movement of said mass under the action of gravity, and a servo-motor controlled by said mass and connected with the balancing plane in order to properly adjustthe latter in thefrequisite direction to restore. the longitudinai equilibrium of the machine when any variation occurs in the absolute Velocity .tl'iereotY l, In a [lying machine, the combination with a Vbalancing,r plane, of a means autoM matically adjustable byyariations in the relative'.velocity of the machine and air itl-trough which it is moving,a body adapted lto c., `machine when there isa Variation oit' the ab- `,tomatically move longitudinally ol the solute speed thereof, and connections' between bothsaid adjustable members and the balancing plane.

j 4i. Inra Vflying machine, vthe combination with a balancingplane, ot' a movable plate connected with thtI balancing plane and adapted tobe moved iu one direction by the pressure ott air through which the machiuclis passing. a lsprint' lendiuglo move said plate. in the opposite direction, a body capable otI moring` longitlulinally ott' the machine when the absolute velocity ot the latter changes, and meansA l'or transmitting movenunt -ot said body to the balancing plane.

o. ln a llying machine, the combination with a balancing plane, ot a movable plate adapted to be moved in one direction by the pressure ot' air through which the machine tasses, a sn'inef actin to move said )late v t: C

in the opposite direction. a body movable longitudinally ot the machine when the absolute velocity thereof changes, and a servomotor adapted to. aetuate the plane and controlled by the joint action of said plato and body. y l

tijln a llying machine, the con'ibration with a balantfing plane, of a memb adapted to be adjusted by variation in the rel'atiw speed ol' the machine, a body automatically adjustable longitudinally of the machine by variation'in the absolute velocity thercol', and a .ci-\o-inotor having a movable member connected with the balancing plane and a controlling val vc adapted 'to be actuated by both said movable plati and body.

T. ln a flyingmachine, tbc combination of a balancing' plane, a plate supported by a lone-itudinally movable rod and adapted to be shil'ted by variation in the pressure ot the air through which the Inachine is traveling, a body mounted on said, rod to more tudinally thereol, collars fixed to said rod on opposite sides of said body, springs interposed between said collars and Vbody, a spring acting to movesaid plate in opp'osii tion totl i air pressure thereon, and aservomotor having a movable member connected with thebalancingr plane and a controlling valve adapted to beactuated by said movable body.

in presence ot two witnesses.

ADOLPIIE FRANPOIS JOSEPH D-OU'IRE.

W i tnesses Y (JLAU-mos Lusson, DEAN B. Mason.

,ln testimony whereof .l atlix my signature 

